That hull is the wellcraft v20 steplift with different chines. I have an email from John Deknatel a few years back about the hull. Here's a pic of a v20 next to a powercat going off to the bay of pigs invasion.
On Tue, 2002-11-12 at 16:43, Karen Petersen wrote:
I forwarded your question to John Deknatel, the president of our firm, who responds: the V-20 was an early Ray Hunt design, originally built by Alim Corp. and then by Wellcraft and others, i.e. ChrisCraft.
Regards,
Karen Petersen
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BTW - This is an old photo.